Thank you very much for your good plugin.
I have only one issue.
Whenever the newsletter is generated, the plugin uses the default WP images folder (I guess).
But I use NextGen Gallery and in newsletters no thumbnail is used if I set the post thumbnail to be an image from NG Gallery.
Please, will you tell me what file and what variable I have to change to set the right path in order to get a nice newsletter with all the post thumbnails appearing?